Bobbin support for weft-replenishing looms



Das. 365 1939. K. J. UNWIN /1785685 BOBBIN SUPPORT FORVWEFT REPLENSHING LOOMS Filed Nov. 22, 1928 7//////A gllllanmvwfllul@ f WETEn: STA-rss; iPArpEeN Patented Dec. 30, 1930 Y FFE KENNETH J. Uiiiwim` or WoRonsTEa, MASSACHUSETTS.' AsSIGNoaTo Cacia-@Ton a ,KNoWLnS con WORKS,

MASSACHUSETTS BOBBIN SUPPORT FOR WEET-'REPLENTSHING LooMS- Application filed November 22,y 1928. Serial No. 321,240. i

VThis invention relates to improvements ink presenta substantiallyvsmooth ksurface for the passage of the 'weft end extending from the bobbin to the thread holder.

Inweft replenishing looms the bobbins are Astored in a plurality of vertical reserve stacks and vimmediatelyprior to transfer a bobbiny Willbe called from one or another `of the stacks to be delivered to yielding supports. The'latter are usually inclined so that the bobbins from the several stacks may roll to a common transfer position. There is always a short end of lfilling extending from the bobbin to the thread holder and this end slides overzthe bobbin `support so that theportion of the support which is in engagement with the bobbin should be uninterrupted or smooth enough not to interfere with: the downward movement of. the weft end. n In co-pending application Ser. No. 251.992

Afiled .byKingthere is set forth a bobbin i holder or support made ofacoilspringall the coilsof which are close. together so as to present the smooth l surface already mentioned. In that application, howeven the o ,coils are closely adjacenteach other throughout the, entire length of the support andthe result is that should a bobbin be misplaced vduringtheforward movement of the lay so vas to engage the support therlatter Will receive a force which `is more' or less 1n line With'its' axis. Under these conditions, due to the fact thatthe kcoils are close together the `support cannot yield and there results either breakagel to the bobbin or a change in thesetting ofthe support. l

e It is animportant objectof my present invention to provide av bobbin support formed of aV single piece of Wire coiled on itself,.some of the coils being kclose together `and some spaced, the coils which are close togetherbeing adapted for engagement with the bobbin as the .latter-V moves toward trans-y fer poSition,-While the spaced or separated conditions to prevent breakage of the bobbin or misadjustment of the support;

vIt isr ar more specific object 'of my present invention to* providea support as an article of manufacture Which shall'have closed coils onjits bobbin supporting end and preferably though not necessarily closed coils atlthe end Where 1t isy Supported7 together With open coils betweenthe sections of closed coils, the open coils acting to'permitlyielding of the bobbin supporting tip yof the support tojard the holder for the support in a direction substantially coincidentivith the axis of the support. l

With these and other objects in view-70 YWhichWill appear as the description proceeds, myy invention reside'sin the combinationand arrangement of parts hereinafter described and set forth in the claims In the accompanyingY drawings vwherein a convenient -embodiment of my invention is set forth, j

Fig. l is a central section through.v a magazinehaving my invention applied thereto, looking toward the tip ends of the bobbins7 Fig.- 2 is a horizontal section on yline 2 2 ofFigl, v.

F ig. 3 is a diagonal front elevation taken in f the direction of arrow 3, Fig. 1, 1

Fig.,4 4 is an enlarged section on line -t of Fig. 2, and

lFigf isa detailed'view similar to a portion of Figl showing the manner in which a misplaced bob-bin may `engage the sup-port.

Referring particularly to Figs. l and 2,1?

havefsho'tvn` a magazine frame havingan outer plate having.verticaloguides -10 which :mayy receive the tips of the bobbins 0F WoRcESTnR,I MASSACHUSETTS, A CORPORATION; on

sov

Bf Inner plate 13 mayl have corresponding guides' 9 for the butts of thebobbins,kr

'ea-ch pair of guides 9 and l0 forming a guide- Way or bobbin compartment.' Located at the bottom of each ofthe guideways is `a cradle 11 Which may berocked at appropriate timesto deliver the lowermost bobbin` spo of the vertical stack corresponding to the active shuttle.

The magazine includes in its construction tie rods 12 which extend between the inner plate 13 and outer plate hl, shown in Fig. 2. The inner plate is supported by means not shown and it is through the tie rods that the outer plate is supported.

The loom may be provided with the lay L carrying a shuttle S which as shown in Fig. 1 may carry a depleted bobbin I). The lay L will always assume substantially the same position with respect to the magazine when in its foremost position and the shuttle will be placed to receive a bobbin located in the transfer position indicated at 'I in Fig. 1. The matter thus far described forms no part of my present invention and may be substantially the same as shown in prior patent to Ryon No.1,030,748.

My present invention relates more particularly to the form of yielding bobbin support which holds a bobbin in transfer position and in carrying my invention into eiect I provide the lower tie rods each with a holder 20. Each of said holders is provided with an inclined bore 21 and these bores are so disposedA that the bore in the forward holder will extend downwardly and rearwardly while therbore in the rear holder will extend downwardly and forwardly. As shown herein the bores 21 are located farther from the center of the magazine than are the corresponding tie rods 12, but inv other respects the holder may perform the same function as the corresponding parts shown in the aforesaid King application. As the supports for both the front and hack holders are the same I will describe but one.

Referring particularly to Fig. 5 it will be seen that I have provided a support 30 having a lower conical en-d 31 which extends from an upwardly inclined substantially cylindrical portion 32. The coils forming the conical and cylindrical portions 31'and 32, respectively, are closely wound as clearly shown in Fig. 5. The upper end of the support 30 is formed of closely wound coils as shown at 33, said coils being wound as set forth in F ig. 5 to provide a more substantial holding surface to engage the boire 21. A screw 34 may extend through the holder and 'clamp the cylindrical closely wound portion 38 to hold the support tightly invposition.

That portion of the support which lies between the cylindrical portions 32 and 33 and indicated herein at 35 is made up of a plurality of spaced coils which are wound from the same wire which forms the closely wound portion of the support.v The length of the cylindrical and conicaly lower support will be determined by the location ofthe outer stacks of hobbins. As shown in Fig. 1 the cylindrical portion 32 will extend from the centra-l portion of the magazine to a point substantially below the corresponding outer stack of bobbins, whether the support be in front of or behind the center of the magazine. IVith this arrangement the weft ends W which extend from the bobbins will always engage closely wound coils and will therefore not be entangled with the latter and will be free to move downwardly toward transfer position with the bobbin drawn from either of the outer stacks. This relation also exists with bobbins drawn from either of the inner stacks. The bores 21 are so disposed with respect to the tie rods that there is considerable length of the support wound with the open coils as clearly shown in Fig. 1.

As previously stated it occasionally happens that a bobbin will be misplaced on a forward beat of the lay and will tend to inrpart an endwise thrust to the forward support tending to move the latter toward its holder. Under these conditions the bobbin may assume the position shown at 40 in Fig. 5 with its butt in engagement with the conical portion 31 and with the lay moving in the direction of arrow 41. As the lay continues its forward movement the open coils 35 will be compressed so that the length of the support may be shortened along its axis with the conical tip moving toward the corresponding holder. After the bobbin has been taken from its improper position the holder because of its inherent resilience will be restored to normal position.

From the foregoing it will be seen that I have provided a very simple form of yielding hobbin support wherein the bobbin supporting portions may move in any direction from their normal position, to be returned tonormal position after deflection by the inherent resilience of the support. More specifically it will be seen that I have provided a yielding bobbin support formed of a single piece of wire having bobbiu supporting and holder engaging portions of closely wound coils and an intermediate portion of open wound coils to permit longitudinal movement of the bobbin supporting part thereof toward the holder part. It will beseen by reference toFig. 1

that the open coils 'are located in such a position that they will not interfere with the weft ends IV but will always be out ofthe range of movementslof thev bobbins as the. latter move from the several reserve stacks in the magazine toward transfer position.

. Having thus described my invention it will be seen that changes and modifications may be made therein by those skilled in the art without departing fromt the spirit and scope of the invention and I do not wish to be limited to the details herein disclosed, but what I claim is:v

1. In a weft replenishing loom,.means defining a guideway along which afplurality of bobbinsv may move toward transfer posi- Ilo tion, a bobbin support formed of a piece of Wire coiled ony itself, said support having some of the coils closely adjacent each other and having other coils open or separated With respect to each other, the open coils beinglocated on that portion of the support Which lies to that side of the guideWay for the bobbins which is opposite the position occupied by a bobbin When in transfer position.

2. In a weft replenishing loom means deiining'a guideway along Which bobbins move .toward transfer position, a bobbin support formed of a piece of Wire coiled on itself and diagonally disposed with respect to the guide- Way for the bobbins and extending on opposite sides of the latter, the coils on one side of the guidevvay being closely Wound to present a substantially smooth surface for a weft Y end extending from a bobbin, and the coils on the opposite side of the guideWay being spaced to permit a yielding of the support in both directions along the line parallel to its axis. i

3. In a. weft replenishing loom, means defining a guideWay along Which bobbins may pass toward transfer position, a control device located at the bottom of the guidevvay to-pass the bobbins oneyat a time from the guidevvay toward transfer position, and an inclined iiexible bobbin support formed of a single piece of Wire coiled on itself around a substantially straight axis, the coils located on one side of the control device being closely adjacent each other to present a smooth surface to a vveft end extending from a bobbin passing toward transfer position, and the coils on the opposite side of the controldevice being spaced apart to provide a part of the support which is capable of yielding in opposite directions along the .line substantially Y parallel to the axis of the support.

al. In a Weit replenishing leoni, means defining a substantially vertical gnideWa-y along which bobbins may pass toward transfer position, a flexible bobbin support extending diagonally and having portions thereof disposed on both sides of the guide- Way, said support being formed of a single piece of Wire coiled on itself, a holder fixed with respect to the loom and affording supporting means for the support, the coils of the support which are located on one side of the guideway being closely adjacent each other to define a substantially smooth surface along Which a weft end may extend from a bobbin moving toward transfer position, and the coils of the support lying on the opposite side of the guidevvay beingspaced apart to present a portion of said support Which may be compressed along a line substantially parallel to the axis of said support and toward the holder. l

5. in a. weft replenishing mechanism, a

y plurality of guidevvays along which bobbins may move toward transfer position, control v open coils.

lnieans atthe vbottom of each guideway to 'deliver a'bobbin toward a common position betweenv the guideways from which the bobbin may be transferred, and a flexible `bobbin support for one of the guidevvays extending on opposite sides of the latter so that one portion projects toward the position from which a bobbin is 4transferred andthe other portion rextends away from such position, said support being formed of a Vsinglepiece of Wire coiled on' itself, the coils which lie between the guideivay and the position from ywhich the bobbin is transferred being closely adjacent each other to present a substantially uninterrupted surface along which a Weftend from the bobbin may extend, and

the coils of that portion vof the support which 'yieldable inall directions from its normal bobbin supporting position, being capable of flexing in any angular direction from the vnor- "inal positionand being capable also of moving in opposite directions along a line substantially parallel to the axis thereof.

` 7. In a weft replenishing loom, ineansto support a bobbin in transfer position, said means including a coil spring support'foimed j of apiece `of Wire coiled on itself around a substantially straight axis andhaving abobbin. supporting portion, the vbobbin supportf ing portion'being,movable in any angular cent coils of the latter being spaced from each other. Y

` Sln a weft replenishing loom, means to support a bobbin in transfer' position, a hold- .f er, said means including a coil spring one end of `which is held securely in the holder'a-nd the other end of which has a bobbin supporting tip, said support beingof substantially cylindrical form and'having anormally straight axisptheAsuppo'rting'tip being movable in angular direction With respect to the normal axis of the support, and being movable 'also along the axis toward the holder While support having a portion extending into the path of the bobbin and having another portion lying outside the path of the bobbin, said support including a piece of Wire coiled on itself, the portion of the support lying in the path of the bobbin being formed of coils Would closely together, and the portion of the support lying behind the path having separated coils which are readily compressible under a force acting on the closed coil portion.

10. A bobbin support for weft replenishing looms comprising a single piece of Wire coiled on itself around an axis, said support having portions which are noncompressible to engage the bobbin and the weft extending therefrom, and said support having other portions which are compressible in a direction along the axis of the support.

11. A coil spring bobbin support for a weft replenishing loom to hold a bobbin in transfer position, said support comprising a piece of coiled Wire to engage the bobbin and made so that it may be stretched along its entire length but is compressible throughout a portion only of its length.

l2, A bobbin support to hold a bobbin in transfer position formed of a coiled wire and having noncompressible portions to engage a bobbin and having also compressible portions integral with the noncompressible portions, whereby the over all length of the support may be decreased under a compressing force Without permanently deforming` the support.

13. A bobbin support to hold a bobbin in transfer position, said support including a single piece of Wire coiled on itself and having certain coils closely adjacent each other to present a substantially uninterrupted surface along which a thread may extend and having another portion formed of open coils which are compressible.

14. A bobbin support to hold a hobbin in transfer position for weft replenishing loom,

said support including a piece of Wire coiled on itself and having at its opposite ends closely Wound coils and having open coils intermediate the closely Wound coils.

15. A bobbin support to hold a bobbin in transfer position, said support including a single piece of Wire Wound on itself, the coils at one end being closely adjacent each other to present an uninterrupted and substantially smooth surface for a Weft thread, said support having a holding portion by which the support may be held in position, and spaced coils formed between the closely Wound portion and the holding portion.

16. A bobbin support for weft replenishing mechanisms to hold a bobbin in transfer position, said support formed of integral compressible and non-compressible portions.

In testimony whereof l have hereunto affixed my signature.

KENNETH J. UNVVIN. 

